alterantadj.改变的alterv.改变；更改；阉割；切除卵巢alternating-gradient focusing交变梯度聚焦alternating impact bending test交变冲讳曲试验alternating current radiometers交流辐射计alternating current phase meter交流相位表alternating-voltage generator交流电压发生器alternating current cardiograph交流心电记录仪alternating current synchronous交流同步Alter? When the hills do.v.改变；更改；阉割；切除卵巢altering effect of market value市值变动效应alternating-current amplifier交流放大器